<template>
  <div class="rank"  ref="rank">
    <Scroll :data="topList" class="toplist" ref="toplist">
      <ul>
        <li class="item" v-for="item in topList" :key="item.id" @click="selectItem(item)">
          <div class="icon">
            <img width="100" height="100" v-lazy="item.picUrl">
          </div>
          <ul class="songlist">
            <li class="song"  v-for="(song,index) in item.songList" :key="index">
              <span>{{ index +1 }}</span>
              <span>{{song.songname}} - {{song.singername}}</span>
            </li>
          </ul>
        </li>
      </ul>
       <div class="loading-container" v-show="!topList.length">
        <loading></loading>
      </div>
    </Scroll>
    <router-view></router-view>
  </div>
</template>
<script>
import {GetRankList } from 'api/rank'
import Scroll from 'base/scroll/scroll'
import Loading from 'base/loading/loading'
import {playlistMixin} from 'common/js/mixin'
import {mapMutations} from 'vuex'

export default {
  mixins: [playlistMixin],
  components:{
    Scroll,
    Loading
  },
  data(){
    return {
      topList: []
    }
  },
  created(){
    this.GetRankList()
  },
  methods:{
    selectItem(item){
      this.$router.push({
        path: `rank/${item.id}`
      })
      this.setTopList(item)  //写入这个数据
    },
    handlePlaylist(playlist) {
      const bottom = playlist.length > 0 ? '60px' : ''
      this.$refs.rank.style.bottom = bottom
      this.$refs.toplist.refresh()
    },
    GetRankList(){
      GetRankList().then( (res) => {
        this.topList = res.data.topList
      })
    },
    ...mapMutations({  //设置mapMutations SET_TOP_LIST
      setTopList:'SET_TOP_LIST'
    })
  }
}
</script>
<style scoped lang="stylus" rel="stylesheet/stylus">
  @import "~common/stylus/variable"
  @import "~common/stylus/mixin"

  .rank
    position: fixed
    width: 100%
    top: 88px
    bottom: 0
    .toplist
      height: 100%
      overflow: hidden
      .item
        display: flex
        margin: 0 20px
        padding-top: 20px
        height: 100px
        &:last-child
          padding-bottom: 20px
        .icon
          flex: 0 0 100px
          width: 100px
          height: 100px
        .songlist
          flex: 1
          display: flex
          flex-direction: column
          justify-content: center
          padding: 0 20px
          height: 100px
          overflow: hidden
          background: $color-highlight-background
          color: $color-text-d
          font-size: $font-size-small
          .song
            no-wrap()
            line-height: 26px
      .loading-container
        position: absolute
        width: 100%
        top: 50%
        transform: translateY(-50%)
</style>